Nozzle for hydraulic motors.



W. A. DOBLE. NOZZLE FOR HYDRAULIC MOTORS.

APPLICATION FILED JAN. 18, 1910.

1,7696% Patented Oct. 28, 1913.

Q VL-bweoo A K Dav/w 7 am wwh jma 13W I v D STATES OFFICE.

WILLIAM? A. DOBIJE, OF SAN FRAfi'GIS'CO, CALIFURNIA, ABSIGN'UR TD MAY E.DOBIJE, OF SAN FRANCISCO, CALIFORNIA.

NOZZLE FOR HYDRAULIC MOTORS:

Specification of Letters Patent.

Patented Oct. 28, 1913.

To all whom z't'vr ay concern:

Be it known that 1, WILLIAM A. DOBLE, a citizen of the United States,and resident of San Francisco, county of San Francisco, State ofCalifornia, have invented certain new and useful Improvements in Nozzlesfor Hydraulic Motors, of whichthe followingis a specification.

This invention relates to hydraulic nozzles of the type described in myprior- Patent 12,460, reissued February 27, 1906.

In hydraulic a paratus of the class referred to, which 1s particularlyapplicable to beusedin connection with water wheels, the nozzle has apivotal relation with respect to the supply pipe to permit it to bemoved about an axis so as to direct the stream against and away from thebuckets 011 the wheel. The joint between the nozzleand supply pipe isenerally a ball and socket joint, and it is found in practice that thejoint israpidly cut out and corroded due to the grit and acid in thewater.

Where the head is high, as is-thc case whereimpact water wheels areused, there is nofeasible way to lubricate the joint, and the wateritself is generally depended upon for lubrication. Where such a ball andsocket joint is used, the-supply pipe must necessarily be provided withan enlarged head so as to furnish the spherical headof the joint. Due tothe very heavy mass of metal, it is extremely difficult to produce solidand; sound castings, in view of the fact that a very, large sectionjoins a. comparatively thin section. The casting will often have blowholes and other defects which must be plugged up in order to obtain asmooth;

caring face. The joint is subject to great wear, no to the sand and gritin the water,

and thus where the head forms an integrali part of the supply pipesection, the entire supply pipe section must be replaced, or mustberemovedand machined down, when the head wears down.

One of the objects of this invention, therefore, is to construct thejoint in such a mannor that it may be properly lubricated, and anotherobject is to provide a renewable head for the spherical part of thejoint which may be readily replaced when it is worn out.

The invention willbe described in 00111160- tion with the which-- 7Figure 1 is an elevation, partl in section, of a part of a supply pipean the nozzle connected thereto; Fig. 2 is-a detail sectional viewshowing the joint.

Referring to the drawings, IO-designates asection of a supply pipe, and11 a nozzle pivotally connected to the supply pipe at 9. The supply pipeis provided with an enlarged head 12 having a removable section 13,which forms one of. the faces of the joint between the supply pipe andthe nozzle. The supply pipe and-theportion of the head integraltherewith are generally comosed of cast iron, while the section 13 may ecomposed of a metal which will withstand corrosion better than the iron,and in practice it is found that brass or gun metal will accomplish thispurpose very well. The section 13 is mounted upon a reduced portion 14of the supply pipe, and is secured in place by being shrunk on, the endof the reduced portion 14 being slightly peened over, as shown at 15.

The nozzle 11 is provided with an enlarged head 16, to which are secureda number of clamping rings 17, 18 and 19. A pair of spaced packing rings20 and 21 are clamped between the clamping rings, the portions of thepacking rings engaging the face of a section 13 being deflected in thedirection of the interior of the nozzle for a purpose hereinafter to bedescribed. The packing rings are preferably otleat-her, and the forwardpackin ring has a guard ring 22 of copper in order to strengthen it andrender it more stilt. The clamping ring 18 has formed therein an annulargroove 23 which forms a channel between the packing rings 20 and 21. Thering 18 is also pro vided with a hole 24, which terminates ina tappedportion 25. The clamping rings firmly secure the packing rings to thehead 16 by means of a'circle of bolts 26 passing through the rings andhead.

The hole 24 and channel 28 are arranged to be connected with a pipe 27,which is connected to a suitable pressure lubricator 28, which isarranged to supply the lubricant to the channel 23 under pressure. Thecylinder of the pressure lubricator receives the lubricant and pressureis applied to the accompanying drawings, in

is shrunk on lubricant by a piston which works in the cylinder and isoperated by a handle 29. The pressure lubricator may be of any suitableconstruction, for instance, such as shown in my copending application,Serial No. 538,641, filed January 18, 1910.

In practice a heavy lubricant is supplied by the pressure lubricator 28under pressure to the channel 23, and this lubricant will thoroughlylubricate the joint. Preferably the pressure of the lubricant is greaterthan the pressure of the water, and thus the lubricant will be forcedunder the packing ring 20. This lubricant will keep the packing 20 inprime condition, and W111 clean off any it or sand that may accumulatethere. In view of the fact that the deflected portions of the packingrings face, in the direction of the interior of the nozzle, the pressureof the water against the rin 20 will operate to force it more ti htlyown on the face of the section 13, an therefore, will close the jointtight, at the same time the oil will be allowed to be forced underneaththe packing. The rear packing ring 21 will also prevent the oil fromescaping backward to the outside of the oint.

By providing the renewable section 13, the section may be replaced forrenewal or repairs by simply removing it. The section K being heated tothe temperature of boi ing water and then placed in position, so that itcan be readily removed by lightly heating it. The pressure of the waterwill of course aid to keep it in position. In this way the expense dueto renewals is very much reduced and the labor required for makingrepairs is also reduced. In view of the fact that the section 13 is aseparate part, defects due to blow holes and the like in the maincasting will not do any harm, since the finished face is on the section13. The section 13 is preferably strengthened by radial webs 13 locatedat intervals, so that the amount of material is a minimum, which isdesirable where brass or gun metal are used.

It is obvious that various changes may be made in the details ofconstruction without departing from this invention. and it is,therefore, to be understood that this invention is not to be limited tothe specific construction shown and described.

What I claim is 1. In a hydraulic apparatus, the combination with asupply pipe, of a nozzle having a pivotal relation thereto, a joint between said members including spaced packing members, and means forforcing a inbricant under pressure between said packing members, for thepurpose set forth.

2. In a hydraulic apparatus, the combination with a supply pipe, of anozzle having a pivotal relation thereto, a joint between said membersincluding a packing member, means for forcing a lubricant on said jointagainst one side of said packing member at a greater pressure than thewater pressure on the other side of saidpacking member, for the purposeset forth, and means for preventing the escape of lubricant to theoutside of the joint.

3. In a hydraulic apparatus, the combination with a supply pipe, of anozzle having a pivotal relation thereto, a joint between said membersincluding a packing member, means for forcing a lubricant on said jointat a greater pressure than the water pressure, and means for preventingescape of lubricant to the outside of the joint, for the purposes setforth.

4. In a hydraulic apparatus, the combination with a supply plpe, of anozzle having a pivotal relation thereto, a oint between said membersincludingapac 'ng ring deflected in the direction of the interior of thenozzle, means for forcing a lubricant under pressure on said jointagainst the side of said ring away from the interior of said nozzle, forthe purpose set forth, and means for preventing the escape of lubricantexcept under said packing ring.

5. In a hydraulic apparatus, the combination with a supply pipe, of anozzle having a pivotal relation thereto, a joint between said membersincluding spaced packing rings deflected in the direction of theinterior of the nozzle, and means whereby a lubricant may be suppliedbetween said members.

6. In a hydraulic apparatus, the combination with a supply pipe, of anozzle having a pivotal relation thereto, and a joint between saidmembers including spaced packing rings on one of said members bearin onthe other of said members and de flected in the same direction, alubricant receiving channel being formed between said members andpacking rings.

7. In a hydraulic apparatus, the combination with a supply pipe, of anozzle having a pivotal relation thereto, and a joint between saidmembers including spaced packing rings on the nozzle bearing on thesupply pipe and deflected in the same direction, said nozzle beingprovided with an annular groove, located in its face between the packingrings, for the reception of a lubricant.

8. In a hydraulic apparatus, the combination with a supply pipe, of anozzle having a pivotal relation thereto, and a joint between saidmembers includin a plurality of clamping rings on said nozzle, aplurality of spaced packing rings clamped between said clamping rings,bearingl ply pipe, and deflected in t e same direction, a lubricantreceiving channel being formed between said packing rings.

9. In a hydraulic apparatus, the combination with a supply pipe, of anozzle havon said sup-' ing "a pivotal relation thereto, ah enlarged Intestimony whereof I afiix my signature outwardly facing sphencal head onsaid in presence of two Witnesses.

supply pipe coiiperating with said nozzle WILLIAM A. DOBLE. to form aball joint, said head having a re- Witnesses: 5 movable bearing sectionshrunk thereon, for (FREDERICK GFELLER,

the purpose set forth. LEOIOLD M. KARNASOIEL.

